A wireless device receives one or more downlink control information. The one or more downlink control information indicate negative acknowledgements. The negative acknowledgements are for one or more first code block groups of a first transport block corresponding to a first hybrid automatic repeat request (HARQ) process and one or more second code block groups of a second transport block corresponding to a second HARQ process. The wireless device determines that a size of a first configured grant is sufficient to retransmit the one or more first code block groups and the one or more second code block groups. Based on the determining, the wireless device retransmits, via radio resources of the first configured grant, the one or more first code block groups and the one or more second code block groups.
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1. A method comprising: receiving one or more radio resource configuration messages indicating periodic radio resources of a first configured grant; transmitting via resource occasions of the periodic radio resources: one or more first code block groups of a first transport block; and one or more second code block groups of a second transport block; receiving one or more downlink control information indicating negative acknowledgements for: the one or more first code block groups of the first transport block corresponding to a first hybrid automatic repeat request (HARQ) process; and the one or more second code block groups of the second transport block corresponding to a second HARQ process; determining that a size of the first configured grant is sufficient to retransmit the one or more first code block groups and the one or more second code block groups; and based on the determining, retransmitting via a first radio resource occasion of the periodic radio resources of the first configured grant: the one or more first code block groups; and the one or more second code block groups.
This invention relates to wireless communication systems, specifically methods for retransmitting code block groups in configured grant transmissions. The problem addressed is efficient retransmission of data when multiple transport blocks are transmitted using periodic radio resources, ensuring reliable communication without requiring additional scheduling requests. The method involves receiving configuration messages that define periodic radio resources for a configured grant, allowing a device to transmit data without explicit scheduling. The device transmits first and second transport blocks, divided into code block groups, over these periodic resources. If downlink control information indicates negative acknowledgements (NACKs) for these code block groups, the device checks whether the configured grant's size is sufficient for retransmission. If sufficient, the device retransmits the failed code block groups from both transport blocks in a single radio resource occasion, optimizing resource usage and reducing latency. This approach avoids the need for separate retransmissions, improving efficiency in scenarios where multiple transport blocks are transmitted concurrently. The method ensures reliable data delivery while minimizing signaling overhead and scheduling delays.
2. The method according to claim 1 , wherein the first configured grant is configured in an unlicensed cell.
This invention relates to wireless communication systems, specifically methods for managing configured grants in unlicensed spectrum. The problem addressed is the efficient and reliable use of unlicensed frequency bands, which are subject to interference and regulatory constraints, to support uplink data transmissions without requiring explicit scheduling requests from user devices. The method involves configuring a first grant for uplink transmissions in an unlicensed cell, where the grant allows a user device to transmit data without waiting for dynamic scheduling. This grant is configured with specific parameters, such as timing, resource allocation, and power control settings, to ensure proper operation in the unlicensed spectrum. The method also includes monitoring the unlicensed cell for interference or regulatory restrictions, such as listen-before-talk (LBT) requirements, and adjusting the grant parameters accordingly to maintain compliance and minimize collisions. Additionally, the method may involve configuring a second grant for a licensed cell, where the second grant operates under different rules than the unlicensed cell. The system may coordinate between the licensed and unlicensed cells to optimize resource usage, ensuring that uplink transmissions are efficiently managed across both types of spectrum. The method may also include mechanisms to handle contention resolution, retransmissions, and fallback procedures if the unlicensed cell becomes unavailable due to interference or regulatory constraints. The invention aims to improve the reliability and efficiency of uplink transmissions in unlicensed spectrum by leveraging configured grants while ensuring compliance with regulatory requirements and minimizing interference with other users.
3. The method of claim 1 further comprising transmitting: first uplink control information corresponding to the one or more first code block groups being retransmitted; and second uplink control information corresponding to the one or more second code block groups being retransmitted.
This invention relates to wireless communication systems, specifically improving retransmission efficiency in error-prone environments. The method addresses the challenge of reliably transmitting control information for retransmitted data blocks in scenarios where initial transmissions fail due to interference or signal degradation. The system involves a wireless communication device that retransmits data divided into code block groups (CBGs). During retransmission, the device transmits two distinct sets of uplink control information (UCI). The first UCI corresponds to one or more first CBGs being retransmitted, while the second UCI corresponds to one or more second CBGs also being retransmitted. This separation allows the receiver to independently verify and process each set of retransmitted data, improving error detection and correction. The method ensures that control information is accurately associated with the correct retransmitted data blocks, reducing misinterpretation and retransmission delays. By transmitting separate UCI for different CBG groups, the system enhances reliability in dynamic wireless channels where interference or fading may affect specific data segments. This approach is particularly useful in 5G and beyond networks where adaptive retransmission strategies are critical for maintaining high data throughput and low latency.
4. The method of claim 3 , wherein the transmitting the first uplink control information and the second uplink control information is based on the first radio resource of the periodic radio resources of the first configured grant.
This invention relates to wireless communication systems, specifically methods for transmitting uplink control information (UCI) using configured grants in a wireless network. The problem addressed is efficient and reliable transmission of UCI, such as acknowledgments or channel state feedback, in scenarios where periodic radio resources are allocated to a user device. The method involves transmitting two distinct sets of uplink control information—first and second UCI—over a first radio resource allocated from a periodic configured grant. The configured grant is a pre-allocated set of radio resources assigned to a user device for uplink transmissions without requiring explicit scheduling requests. The periodic nature of these resources ensures regular transmission opportunities. The first and second UCI may include different types of control information, such as hybrid automatic repeat request (HARQ) acknowledgments or channel quality indicators (CQI), and are transmitted simultaneously or in a coordinated manner over the same radio resource. This approach optimizes resource utilization by multiplexing different UCI types within the same transmission slot, reducing overhead and improving efficiency in wireless communication. The method ensures reliable delivery of critical control information while minimizing signaling overhead in the network.
5. The method of claim 3 , wherein the transmitting the first uplink control information and the second uplink control information is via an uplink control channel.
This invention relates to wireless communication systems, specifically methods for transmitting uplink control information (UCI) from a user device to a base station. The problem addressed is the efficient and reliable transmission of UCI, which includes acknowledgments, channel state feedback, and scheduling requests, to optimize network performance and reduce latency. The method involves transmitting two types of UCI—first UCI and second UCI—via an uplink control channel. The first UCI may include acknowledgment signals (ACK/NACK) for downlink data, while the second UCI may include channel state information (CSI) or scheduling requests (SR). The transmission is structured to avoid collisions and ensure proper prioritization, such as transmitting ACK/NACK before CSI when both are pending. The uplink control channel may be a physical uplink control channel (PUCCH) in LTE or 5G NR systems, using predefined resources or dynamic allocations to minimize overhead. The method ensures that UCI is transmitted without interference, improving reliability and reducing the need for retransmissions. It also supports flexible resource allocation, allowing the network to adapt to varying traffic conditions. This approach enhances spectral efficiency and user experience in high-mobility and dense network scenarios.
6. The method of claim 3 , wherein at least a first portion of the first uplink control information and the second uplink control information is transmitted based on the first configured grant and at least a second portion of the first uplink control information and the second uplink control information is transmitted via an uplink control channel.
In wireless communication systems, efficient transmission of uplink control information (UCI) is critical for maintaining reliable communication between user equipment (UE) and a base station. A challenge arises when the UE needs to transmit multiple types of UCI, such as hybrid automatic repeat request (HARQ) acknowledgments and channel state information (CSI), while managing limited uplink resources. This invention addresses the problem by providing a method for transmitting UCI using a combination of configured grants and dedicated uplink control channels. The method involves dividing the UCI into at least two portions. A first portion of the UCI, which may include HARQ acknowledgments or CSI, is transmitted using a configured grant, which is a pre-allocated uplink resource that does not require dynamic scheduling. This reduces signaling overhead and latency. A second portion of the UCI is transmitted via a dedicated uplink control channel, such as a physical uplink control channel (PUCCH), which is dynamically scheduled when additional resources are needed. The method ensures that UCI is transmitted efficiently, balancing the use of pre-allocated and dynamically allocated resources to optimize uplink performance. This approach is particularly useful in scenarios where the UE has varying UCI transmission requirements, ensuring reliable communication while minimizing resource waste.
7. The method of claim 3 , wherein the first uplink control information indicates a first hybrid automatic repeat request process identifier of the first transport block and the second uplink control information indicates a second hybrid automatic repeat request process identifier of the second transport block.
In wireless communication systems, efficient transmission and retransmission of data is critical for maintaining reliable communication links. A common challenge is managing hybrid automatic repeat request (HARQ) processes, which handle retransmissions of data blocks when errors are detected. The invention addresses this by improving the identification and tracking of HARQ processes for multiple transport blocks transmitted in a single uplink transmission. The method involves transmitting two transport blocks in a single uplink transmission, where each transport block is associated with a distinct HARQ process identifier. The first transport block is linked to a first HARQ process identifier, and the second transport block is linked to a second HARQ process identifier. Uplink control information (UCI) is used to convey these identifiers, with the first UCI indicating the first HARQ process identifier for the first transport block and the second UCI indicating the second HARQ process identifier for the second transport block. This allows the receiving device to distinguish between the HARQ processes of the two transport blocks, enabling proper error detection and retransmission handling for each block independently. By associating separate HARQ process identifiers with each transport block in a multi-block uplink transmission, the method ensures that retransmissions are correctly managed, reducing errors and improving communication reliability. This approach is particularly useful in scenarios where multiple data blocks are transmitted simultaneously, such as in advanced wireless communication protocols like 5G and beyond.
8. The method of claim 3 , wherein the first uplink control information indicates a first code block group transmission information indicating a presence of the one or more first code block groups being retransmitted.
A method for wireless communication involves transmitting uplink control information (UCI) to indicate the status of code block group (CBG) transmissions in a wireless network. The method addresses the challenge of efficiently managing retransmissions in wireless communication systems, particularly in scenarios where data is divided into multiple code block groups for transmission. The UCI includes information about the presence of one or more code block groups that are being retransmitted, allowing the receiving device to identify which groups require retransmission and process them accordingly. This improves transmission reliability and reduces unnecessary retransmissions by providing explicit feedback on the status of each code block group. The method may also involve transmitting additional UCI to indicate the presence of other code block groups that are not being retransmitted, ensuring comprehensive feedback on the transmission status. The technique is particularly useful in systems where data is segmented into smaller blocks for efficient transmission and error recovery.
9. The method of claim 3 , wherein the second uplink control information indicates a second code block group transmission information indicating a presence of the one or more second code block groups being retransmitted.
A method for wireless communication involves transmitting uplink control information (UCI) to indicate the status of code block group (CBG) transmissions in a wireless network. The method addresses the challenge of efficiently managing retransmissions of data blocks in wireless communication systems, particularly in scenarios where data is divided into multiple code block groups for transmission. The method includes transmitting a first UCI to indicate the presence of one or more first CBGs being retransmitted, where the first UCI is associated with a first transmission. Additionally, a second UCI is transmitted to indicate the presence of one or more second CBGs being retransmitted, where the second UCI is associated with a second transmission. The second UCI specifically signals whether the second CBGs are being retransmitted, allowing the receiving device to identify which CBGs require retransmission. This method improves the reliability and efficiency of data transmission by enabling precise feedback on the retransmission status of individual CBGs, reducing unnecessary retransmissions and optimizing network resources. The method is particularly useful in wireless communication systems where data integrity and transmission efficiency are critical.
10. The method of claim 3 , wherein the transmitting the first uplink control information comprises multiplexing the first uplink control information with the one or more first code block groups being retransmitted, and the transmitting the second uplink control information comprises multiplexing the second uplink control information with the one or more second code block groups being retransmitted.
This invention relates to wireless communication systems, specifically methods for retransmitting data and control information in a wireless network. The problem addressed is the efficient transmission of uplink control information (UCI) alongside retransmitted data to improve reliability and reduce latency in wireless communications. The method involves retransmitting data in the form of code block groups (CBGs) while simultaneously transmitting UCI. The UCI is multiplexed with the retransmitted CBGs to ensure both data and control information are sent in the same transmission. This approach allows for the efficient use of transmission resources by combining control and data signals, reducing the need for separate transmissions. The UCI may include acknowledgment/negative acknowledgment (ACK/NACK) feedback, channel state information (CSI), or scheduling requests, depending on the network requirements. The retransmission process involves dividing data into multiple CBGs, where each CBG can be individually retransmitted if errors are detected. The UCI is then multiplexed with the retransmitted CBGs, ensuring that control information does not delay the data transmission. This method improves spectral efficiency and reduces the overall transmission time, particularly in scenarios where frequent retransmissions are required due to poor channel conditions or high interference. The technique is applicable in various wireless communication standards, including 5G and beyond.
11. A wireless device comprising one or more processors and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: receive one or more radio resource configuration messages indicating periodic radio resources of a first configured grant; transmit via resource occasions of the periodic radio resources: one or more first code block groups of a first transport block; and one or more second code block groups of a second transport block; receive one or more downlink control information indicating negative acknowledgements for: the one or more first code block groups of the first transport block corresponding to a first hybrid automatic repeat request (HARQ) process; and the one or more second code block groups of the second transport block corresponding to a second HARQ process; determine that a size of the first configured grant is sufficient to retransmit the one or more first code block groups and the one or more second code block groups; and based on the determining, retransmit via a first radio resource occasion of the periodic radio resources of the first configured grant: the one or more first code block groups; and the one or more second code block groups.
A wireless device includes processors and memory storing instructions to manage data transmission and retransmission using configured grants in a wireless communication system. The device receives radio resource configuration messages defining periodic radio resources for a first configured grant. It transmits first and second code block groups of respective first and second transport blocks during resource occasions of these periodic resources. The device then receives downlink control information indicating negative acknowledgements (NACKs) for the first code block groups (linked to a first HARQ process) and the second code block groups (linked to a second HARQ process). Upon determining that the configured grant's size is sufficient for retransmission, the device retransmits both sets of code block groups during a subsequent resource occasion of the same configured grant. This approach optimizes resource utilization by reusing the same configured grant for retransmissions of multiple HARQ processes, reducing signaling overhead and improving efficiency in wireless data transmission. The solution addresses challenges in managing retransmissions in configured grant-based communications, particularly in scenarios where multiple HARQ processes require retransmission within the same configured grant period.
12. The wireless device according to claim 11 , wherein the first configured grant is configured in an unlicensed cell.
A wireless device operates in a wireless communication system where licensed and unlicensed spectrums are used. The device is configured to receive a first configured grant for uplink transmissions in an unlicensed cell, allowing the device to transmit data without first requesting permission from the network. The first configured grant is pre-configured by the network and includes parameters such as time and frequency resources, modulation and coding schemes, and power control settings. The device monitors the unlicensed cell for clear channel assessment (CCA) to determine if the channel is available before transmitting. If the channel is available, the device transmits data using the configured grant. If the channel is busy, the device may defer transmission or attempt again later. The device may also receive a second configured grant for a licensed cell, allowing it to transmit data in both licensed and unlicensed spectrums. The device may prioritize transmissions based on the type of grant or the spectrum used. The system improves efficiency by reducing signaling overhead and latency, especially in scenarios where quick data transmission is critical.
13. The wireless device of claim 11 , wherein the instructions further cause the wireless device to transmit: first uplink control information corresponding to the one or more first code block groups being retransmitted; and second uplink control information corresponding to the one or more second code block groups being retransmitted.
This invention relates to wireless communication systems, specifically improving retransmission efficiency in wireless devices. The problem addressed is the need for efficient feedback and retransmission mechanisms when transmitting data in code block groups (CBGs) over wireless channels. In wireless communication, data is often divided into CBGs for retransmission, but existing methods lack optimized feedback mechanisms to indicate which CBGs require retransmission, leading to inefficiencies. The invention describes a wireless device configured to handle retransmissions of code block groups in a wireless communication system. The device includes a processor and memory storing instructions that, when executed, cause the device to transmit first uplink control information (UCI) corresponding to one or more first code block groups being retransmitted and second UCI corresponding to one or more second code block groups being retransmitted. The first and second UCI provide feedback to the network about the retransmission status of different CBGs, allowing the network to selectively retransmit only the necessary CBGs. This reduces unnecessary retransmissions and improves overall communication efficiency. The device may also receive downlink control information (DCI) indicating the retransmission of the CBGs, further optimizing the retransmission process. The invention enhances reliability and efficiency in wireless data transmission by enabling precise feedback and selective retransmission of CBGs.
14. The wireless device of claim 13 , wherein the transmitting the first uplink control information and the second uplink control information is based on the first radio resource of the periodic radio resources of the first configured grant.
This invention relates to wireless communication systems, specifically improving uplink control information (UCI) transmission in scenarios where a wireless device uses configured grants for periodic uplink transmissions. The problem addressed is ensuring reliable UCI delivery when multiple UCI messages need to be transmitted simultaneously, potentially exceeding the capacity of a single transmission opportunity. The solution involves a wireless device transmitting first and second UCI messages using different radio resources from a set of periodic radio resources allocated via a configured grant. The device selects these resources based on predefined rules, such as prioritization or resource availability, to avoid collisions and ensure successful transmission. The invention also includes mechanisms for handling cases where the UCI messages cannot be transmitted within the same period, such as by delaying or splitting the transmissions across multiple periods. This approach optimizes resource utilization and reduces transmission failures in wireless networks, particularly in scenarios with high UCI traffic or limited resource availability. The invention is applicable to various wireless standards, including 5G and beyond, where efficient UCI transmission is critical for maintaining network performance and reliability.
15. The wireless device of claim 13 , wherein the transmitting the first uplink control information and the second uplink control information is via an uplink control channel.
A wireless device is configured to transmit uplink control information (UCI) over an uplink control channel. The device includes a processor and a transceiver. The processor generates first UCI, such as hybrid automatic repeat request (HARQ) acknowledgments, and second UCI, such as channel state information (CSI). The transceiver transmits the first and second UCI via an uplink control channel, which may be a physical uplink control channel (PUCCH). The transmission may occur in a single transmission or in separate transmissions, depending on the configuration. The device may also receive downlink control information (DCI) that schedules the transmission of the UCI. The uplink control channel may be configured to carry both periodic and aperiodic UCI, ensuring efficient use of uplink resources. This approach optimizes control signaling by consolidating different types of UCI into a structured transmission framework, reducing overhead and improving reliability in wireless communication systems. The device may operate in various wireless networks, including 5G and beyond, where efficient UCI transmission is critical for maintaining low latency and high throughput.
16. The wireless device of claim 13 , wherein at least a first portion of the first uplink control information and the second uplink control information is transmitted based on the first configured grant and at least a second portion of the first uplink control information and the second uplink control information is transmitted via an uplink control channel.
In wireless communication systems, efficient transmission of uplink control information (UCI) is critical for maintaining reliable communication between user devices and base stations. A key challenge is optimizing the transmission of UCI, particularly when multiple types of control information need to be sent simultaneously. This invention addresses this by providing a wireless device configured to transmit different portions of UCI using distinct methods. The device is designed to send at least a first portion of the first UCI and the second UCI based on a pre-configured grant, which allows for scheduled, contention-free transmission. Additionally, at least a second portion of the first UCI and the second UCI is transmitted via a dedicated uplink control channel, ensuring timely delivery of critical control information. This dual-transmission approach enhances flexibility and reliability, allowing the device to adapt to varying network conditions and prioritize different types of UCI based on their importance and urgency. The invention improves overall system efficiency by reducing transmission delays and minimizing resource conflicts, particularly in scenarios where multiple control signals must be conveyed concurrently.
17. The wireless device of claim 13 , wherein the first uplink control information indicates a first hybrid automatic repeat request process identifier of the first transport block and the second uplink control information indicates a second hybrid automatic repeat request process identifier of the second transport block.
This invention relates to wireless communication systems, specifically to a wireless device configured to handle uplink control information (UCI) for multiple transport blocks in a hybrid automatic repeat request (HARQ) process. The problem addressed is the efficient transmission of UCI for multiple transport blocks, ensuring proper identification and processing of HARQ feedback. The wireless device transmits a first transport block and a second transport block to a base station. The device generates first uplink control information (UCI) associated with the first transport block and second UCI associated with the second transport block. The first UCI includes a first HARQ process identifier (HARQ-ID) that uniquely identifies the HARQ process for the first transport block, while the second UCI includes a second HARQ-ID for the second transport block. This allows the base station to distinguish between the HARQ processes of the two transport blocks, ensuring accurate acknowledgment or retransmission requests. The wireless device may also determine a priority between the first and second transport blocks and transmit the UCI accordingly. If the first transport block has higher priority, the device may transmit the first UCI before the second UCI. This prioritization ensures that critical data is processed first, improving system efficiency and reliability. The invention enhances HARQ feedback management in wireless communication systems, particularly in scenarios involving multiple transport blocks.
18. The wireless device of claim 13 , wherein the first uplink control information indicates a first code block group transmission information indicating a presence of the one or more first code block groups being retransmitted.
A wireless device is configured to transmit uplink control information (UCI) to a base station in a wireless communication system. The device includes a processor and a transceiver. The processor generates UCI that includes code block group (CBG) transmission information, which indicates whether one or more CBGs are being retransmitted. The transceiver transmits this UCI to the base station. The CBG transmission information allows the base station to identify which CBGs require retransmission, improving data reliability and efficiency in wireless communications. The device may also include a memory storing instructions for generating and transmitting the UCI, and the transceiver may operate in a frequency band supporting high-speed data transmission. The UCI may further include other control information, such as hybrid automatic repeat request (HARQ) acknowledgments or channel state information. The retransmission of specific CBGs reduces unnecessary retransmissions of correctly received data, optimizing network resources and reducing latency. This technology is particularly useful in advanced wireless systems where efficient data transmission and error recovery are critical.
19. The wireless device of claim 13 , wherein the second uplink control information indicates a second code block group transmission information indicating a presence of the one or more second code block groups being retransmitted.
A wireless device is configured to receive downlink control information (DCI) from a base station, where the DCI includes uplink control information (UCI) for transmitting one or more code block groups (CBGs) of data. The device determines whether the UCI indicates a retransmission of one or more first CBGs based on a first code block group transmission information field in the UCI. If the UCI indicates a retransmission, the device transmits the one or more first CBGs to the base station. The device also receives a second UCI from the base station, where the second UCI includes a second code block group transmission information field indicating whether one or more second CBGs are being retransmitted. If the second UCI indicates a retransmission, the device transmits the one or more second CBGs to the base station. This system enables efficient retransmission of specific CBGs in wireless communication, improving data reliability and reducing unnecessary retransmissions. The device may also include a processor and memory for executing the transmission and reception operations. The CBG retransmission mechanism is particularly useful in scenarios where only certain parts of a data transmission fail, allowing for selective retransmission rather than retransmitting the entire data block.
20. A system comprising: a base station comprising one or more first processors and first memory storing first instructions that, when executed by the one or more first processors, cause the base station to: transmit one or more radio resource configuration messages indicating periodic radio resources of a first configured grant; receive via resource occasions of the periodic radio resources: one or more first code block groups of a first transport block; and one or more second code block groups of a second transport block; transmit one or more downlink control information indicating negative acknowledgements for: the one or more first code block groups of the first transport block corresponding to a first hybrid automatic repeat request (HARQ) process; and the one or more second code block groups of the second transport block corresponding to a second HARQ process; and based on a determination that a size of the first configured grant is sufficient to retransmit the one or more first code block groups and the one or more second code block groups, receive via a first radio resource occasion of the periodic radio resources of the first configured grant: the one or more first code block groups; and the one or more second code block groups; and a wireless device comprising one or more second processors and second memory storing second instructions that, when executed by the one or more second processors, cause the wireless device to: receive the one or more radio resource configuration messages; transmit via the resource occasions of the periodic radio resources: the one or more first code block groups; and the one or more second code block groups; receive the one or more downlink control information; determine that the size of the first configured grant is sufficient to retransmit the one or more first code block groups and the one or more second code block groups; and retransmit via the first radio resource occasion of the periodic radio resources of the first configured grant; the one or more first code block groups; and the one or more second code block groups.
The system involves wireless communication between a base station and a wireless device, focusing on efficient retransmission of data using configured grants in a cellular network. The problem addressed is the need for reliable and timely retransmission of data blocks when initial transmissions fail, particularly in scenarios where multiple transport blocks are involved. The system includes a base station and a wireless device, each with processors and memory storing instructions for managing data transmission and retransmission. The base station transmits configuration messages to the wireless device, defining periodic radio resources for a configured grant. The wireless device uses these resources to send multiple code block groups from different transport blocks, each associated with separate hybrid automatic repeat request (HARQ) processes. If the base station detects errors in the received data, it sends downlink control information with negative acknowledgements for the failed code block groups. Upon determining that the configured grant's size is sufficient for retransmission, the wireless device retransmits the failed code block groups within the same periodic radio resources. This approach optimizes resource usage by reusing the configured grant for retransmissions, reducing signaling overhead and improving data reliability.
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January 8, 2020
February 15, 2022
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